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標(biāo)題: 51單片機(jī)示波器，四種可跳檔簡單波形仿真與源碼 [打印本頁]

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作者: 孫小楓    時(shí)間: 2018-6-19 10:47
標(biāo)題: 51單片機(jī)示波器，四種可跳檔簡單波形仿真與源碼
51單片機(jī)示波器，四種可跳檔簡單波形，研究生單片機(jī)作業(yè)
仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）


單片機(jī)源程序如下:

1. #include <reg51.H>
   
2. #include<absacc.h>
   
3. #define uchar unsigned char
   
4. #define uint unsigned int
   
5. #define dz XBYTE[0x7fff]//dac0832總線地址
   
6. 
   
7. //1602LCD相關(guān)
   
8. sbit RS = P3^0;   //定義端口
   
9. sbit EN = P3^1;
   
10. //按鍵定義
    
11. sbit key1 = P3^2;
    
12. sbit key2 = P3^3;
    
13. sbit key3 = P3^4;
    
14. sbit key4 = P3^5;
    
15. uchar mode = 0;//輸出波形的模式
    
16. uchar LCDFlag;//LCD更新顯示標(biāo)志
    
17. uchar LCDbuf[16];//LCD顯示緩存
    
18. uchar TIMER_H;//給計(jì)數(shù)器的值
    
19. uchar TIMER_L;
    
20. int Fre10X = 200;//當(dāng)前頻率的10的倍數(shù)     此時(shí)為20.0hz
    
21. uchar CurStal = 1;//步進(jìn)檔位1=0.1x 10=1x 100=10x
    
22. uchar code WaveInfo[3][15] = {"Sine Wave     ",//顯示當(dāng)前波形類型
    
23.                                     "Triangle Wave ",
    
24.                                     "Square Wave   "};
    
25. uchar i = 0;
    
26. //方波
    
27. uchar code Squaretab[64] = {0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,
    
28. 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
    
29. 255,255,255,255,255,255,255,255
    
30. };
    
31. //sin波
    
32. uchar code Sinetab[256] = {
    
33.                     0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,
    
34.                                         0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5,
    
35.                                         0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,
    
36.                                         0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5,
    
37.                                         0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,
    
38.                                         0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,
    
39.                                         0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,
    
40.                                         0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,
    
41.                                         0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,
    
42.                                         0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,
    
43.                                         0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,
    
44.                                         0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,
    
45.                                         0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,
    
46.                                         0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,
    
47.                                         0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,
    
48.                                         0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,
    
49.                                         0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,
    
50.                                         0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15,
    
51.                                         0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,
    
52.                                         0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e,
    
53.                                         0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,
    
54.                                         0x76,0x79,0x7c,0x80 };
    
55. //三角
    
56. uchar code Triangletab[64] = {
    
57.   0,  8, 16, 24, 32, 40, 48, 56,
    
58. 64, 72, 80, 88, 96,104,112,120,
    
59. 128,136,144,152,160,168,176,184,
    
60. 192,200,208,216,224,232,240,248,
    
61. 
    
62. 248,240,232,224,216,208,200,192,
    
63. 184,176,168,160,152,144,136,128,
    
64. 120,112,104, 96, 88, 80, 72, 64,
    
65. 56, 48, 40, 32, 24, 16, 8, 0};
    
66. //鋸齒
    
67. uchar code juchi[64] = {
    
68. 0,4,8,12,16,20,24,28,32,36,40,45,49,53,57,61,65,69,73,77,81,85,89,93,97,101,105,109,113,117,121,125,130,134,138,142,
    
69. 146,150,154,158,162,166,170,174,178,182,186,190,194,198,202,206,210,215,219,223,227,231,235,239,243,247,251,255
    
70. };       
    
71. //uS延時(shí)函數(shù)
    
72. void DelayUs2x(uchar t)
    
73. {   
    
74.     while(--t);
    
75. }
    
76. //mS延時(shí)函數(shù)
    
77. void DelayMs(uint t)
    
78. {
    
79.      
    
80.     while(t--)
    
81.     {
    
82.         DelayUs2x(245);
    
83.         DelayUs2x(245);
    
84.     }
    
85. }
    
86. //              寫入命令函數(shù)
    
87. void LCD_Write_Com(uchar com)
    
88. {  
    
89.     RS = 0;  
    
90.     EN = 1;
    
91.     P1 = com;   //送入數(shù)據(jù)
    
92.     DelayUs2x(200);
    
93.     EN = 0;
    
94.     DelayUs2x(500);  //延時(shí)等待ＬＣＤ處理數(shù)據(jù)
    
95. }
    
96. //              寫入數(shù)據(jù)函數(shù)
    
97. void LCD_Write_Data(unsigned char Data)
    
98. {
    
99.     RS = 1;
    
100.     EN = 1;
     
101.     P1 = Data;  //送入數(shù)據(jù)
     
102.     DelayUs2x(200);
     
103.     EN = 0;   
     
104.     DelayUs2x(500);   //延時(shí)等待ＬＣＤ處理數(shù)據(jù)
     
105. }
     
106. //                清屏函數(shù)
     
107. void LCD_Clear(void)
     
108. {
     
109.     LCD_Write_Com(0x01);
     
110.     DelayMs(5);
     
111. }
     
112. //              寫入字符串函數(shù)
     
113. void LCD_Write_String(uchar x, uchar y, uchar *s)
     
114. {     
     
115.     if(y == 0)
     
116.     {     
     
117.         LCD_Write_Com(0x80 + x);     //表示第一行
     
118.     }
     
119.     else
     
120.         {      
     
121.         LCD_Write_Com(0xC0 + x);      //表示第二行
     
122.         }        
     
123.     while(*s)
     
124.         {     
     
125.         LCD_Write_Data(*s);     
     
126.         s++;     
     
127.         }
     
128. }
     
129. /**************************************************
     
130.               初始化函數(shù)
     
131. ***************************************************/
     
132. void LCD_Init(void)
     
133. {
     
134.     LCD_Write_Com(0x38);    //顯示模式設(shè)置
     
135.     DelayMs(5);
     
136.     LCD_Write_Com(0x38);
     
137.     DelayMs(5);
     
138.     LCD_Write_Com(0x38);  
     
139.     LCD_Write_Com(0x08);    //顯示關(guān)閉
     
140.     LCD_Write_Com(0x01);    //顯示清屏
     
141.     LCD_Write_Com(0x06);    //顯示光標(biāo)移動(dòng)設(shè)置
     
142.     DelayMs(5);
     
143.     LCD_Write_Com(0x0C);    //顯示開及光標(biāo)設(shè)置
     
144. }
     
145. /**************************************************
     
146.    在LCD指定位置顯示光標(biāo)
     
147. **************************************************/
     
148. void LCD_Cursor_Dis(uchar x, uchar y)
     
149. {
     
150.     if(y == 0)              //LCD第一行
     
151.     {
     
152.         LCD_Write_Com(0x80 + x);
     
153.     }
     
154.     else                  //LCD第二行
     
155.     {
     
156.         LCD_Write_Com(0xC0 + x);
     
157.     }
     
158.     LCD_Write_Com(0x0F);  //光標(biāo)顯示開
     
159.     DelayUs2x(4);         //延時(shí)越40us
     
160. }
     
161. /**************************************************
     
162.    關(guān)閉光標(biāo)
     
163. **************************************************/
     
164. void LCD_Close_Cursor()
     
165. {
     
166.     LCD_Write_Com(0x0C);  //光標(biāo)顯示關(guān)
     
167.     DelayUs2x(4);         //延時(shí)越40us
     
168. }
     
169. 
     
170. void keyscanf()         //按鍵掃描
     
171. {
     
172.     uint temp;
     
173.         if(key1 == 0)//模式選擇
     
174.         {
     
175.                 mode++;
     
176.         LCDFlag = 1;
     
177.                 if(mode == 4)
     
178.                         mode = 0;
     
179.                 while(!key1);
     
180.         }
     
181.         if(key2 == 0)//增加
     
182.         {
     
183.                 if((Fre10X + CurStal) < 501)
     
184.         {
     
185.                         Fre10X = Fre10X + CurStal;
     
186.             temp = (unsigned long)10000000 / 64 / Fre10X;
     
187.             TIMER_H = (65535 - temp) / 256;
     
188.             TIMER_L = (65535 - temp) % 256;
     
189.         }
     
190.         LCDFlag = 1;
     
191.                 while(!key2);
     
192.         }
     
193.         if(key3 == 0)
     
194.         {
     
195.         if((Fre10X - (int)CurStal) > 1)
     
196.         {
     
197.                         Fre10X = Fre10X - CurStal;
     
198.             temp = (unsigned long)10000000 / 64 / Fre10X;
     
199.             TIMER_H = (65535 - temp) / 256;
     
200.             TIMER_L = (65535 - temp) % 256;
     
201.         }
     
202.         LCDFlag = 1;
     
203.                 while(!key3);
     
204.         }
     
205.         if(key4 == 0)
     
206.         {
     
207.             switch(CurStal)//調(diào)整步進(jìn)檔位
     
208.         {
     
209.                 case 1:        CurStal = 10;
     
210.                                 break;
     
211.                 case 10: CurStal = 100;
     
212.                                 break;
     
213.                         case 100: CurStal = 1;
     
214.                                 break;
     
215.         }
     
216.         LCDFlag = 1;
     
217.                 while(!key4);
     
218.         }
     
219. }
     
220. 
     
221. void init_time()
     
222. {
     
223.         EA = 1; //開中斷
     
224.         ET0 = 1;
     
225.         TMOD = 0X01; //初始化
     
226.         TR0 = 1; //開定時(shí)器
     
227. }
     
228. void time0() interrupt 1 using 2
     
229. {
     
230.     TH0 = TIMER_H;
     
231.     TL0 = TIMER_L;
     
232.         switch(mode)
     
233.         {
     
234.         case 0://正弦顯示
     
235.                         dz = Sinetab[i];
     
236.                         i = i + 4;
     
237.                 break;
     
238.         case 1://三角顯示
     
239.                         dz = Triangletab[i];
     
240.                         i = (i + 1) % 64;
     
241.                 break;
     
242.         case 2://方波顯示
     
243.                         dz = Squaretab[i];
     
244.                         i = (i + 1) % 64;
     
245.                 break;
     
246.                 case 3://鋸齒波顯示
     
247.                         dz = juchi[i];
     
248.                         i = (i + 1) % 64;
     
249.                 break;
     
250.         }
     
251. }
     
252. void main()
     
253. {
     
254.     uint temp;
     
255.     init_time();  //定時(shí)器初始化調(diào)用
     
256.     mode = 1;
     
257.     temp = (unsigned long)10000000 / 64 / Fre10X;
     
258.     TIMER_H = (65535 - temp) / 256;
     
259.     TIMER_L = (65535 - temp) % 256;
     
260.     LCD_Init();     //初始化液晶
     
261.     LCDFlag = 1;     //將液晶需要刷新標(biāo)志置1
     
262.         while(1)
     
263.         {
     
264.         keyscanf();  //按鍵一直掃描
     
265.         if(LCDFlag)
     
266. ……………………
     
267. 
     
268. …………限于本文篇幅 余下代碼請(qǐng)從51黑下載附件…………
     

復(fù)制代碼

所有資料51hei提供下載:
簡易信號(hào)發(fā)生器 - 副本.rar (76.88 KB, 下載次數(shù): 134)

2018-6-19 10:46 上傳

點(diǎn)擊文件名下載附件
示波器
下載積分: 黑幣 -5

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作者: rrqxx    時(shí)間: 2019-1-15 21:24
感謝樓主分享！

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作者: 小貓貓愛吃魚    時(shí)間: 2019-1-15 23:13
這個(gè)是信號(hào)發(fā)生器，不是示波器

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作者: Rocliu7    時(shí)間: 2019-6-25 10:37
只有一種波形

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作者: naive_og    時(shí)間: 2020-6-26 20:26
感謝樓主，完美運(yùn)行

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